Thanks to Costas for his very interesting response on this topic. It
will take me a while to digest his argument, but on a first reading I can
find much to agree with; and he may well be right that the passage from
Poverty... is not so obvious in its meaning as I thought.
Costas asked for a copy of the working paper I cited. I will put a link
to a postscript version of the paper on my Web page:
later today. If you'd prefer that I mail you a printed version, Costas,
please let me know.
Allin Cottrell.